US4773842A - Injection molding machine - Google Patents

Injection molding machine Download PDF

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Publication number
US4773842A
US4773842A US07/124,353 US12435387A US4773842A US 4773842 A US4773842 A US 4773842A US 12435387 A US12435387 A US 12435387A US 4773842 A US4773842 A US 4773842A
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US
United States
Prior art keywords
seat plate
base
injection device
injection
hydraulic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US07/124,353
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English (en)
Inventor
Katashi Aoki
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Individual
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Individual
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Publication date
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Publication of US4773842A publication Critical patent/US4773842A/en
Assigned to AOKI, SHIGETA reassignment AOKI, SHIGETA ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: KIMURA, SATORU, EXECUTOR TO THE ESTATE OF KATASHI AOKI
Assigned to KIMURA, SATORU, EXECUTOR TO THE ESTATE OF KATASHI AOKI reassignment KIMURA, SATORU, EXECUTOR TO THE ESTATE OF KATASHI AOKI LAST WILL AND TESTAMENT. Assignors: AOKI, KATASHI, DECEASED
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Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/1774—Display units or mountings therefor; Switch cabinets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/03—Injection moulding apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/03—Injection moulding apparatus
    • B29C45/07—Injection moulding apparatus using movable injection units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/1773—Means for adjusting or displacing the injection unit into different positions, e.g. for co-operating with different moulds

Definitions

  • This invention relates to an injection molding machine used in the case where molten synthetic resin or plastic is poured into a mold to obtain a desired molded article.
  • a mold clamping device and an injection device are placed on and secured to a machine base, and an electric box is mounted on the surface on the side of the machine bed.
  • the electric box houses a power board and a number of electric devices necessary for injection molding such as devices for controlling a heater used to heat an injection cylinder, hydraulic device, for driving an injection device and a mold clamping device.
  • Electric devices for the above-described devices and regulating members are mounted on a door panel thereof.
  • Electric wires for heaters and magnet hydraulic values provided on the side of the injection device are loosely disposed, between said electric box and said injection device, so as not to be a hindrance to forward and backward movement of the injection device as it proceeds through a molding cycle.
  • the wiring is often a hindrance to maintenance and inspection of the injection device and the necessity of excessively long wiring is costly.
  • a further disadvantage is that to read meters, operate, and inspect the equipment, the operator must be bent forward.
  • This invention has been achieved in an attempt of solving these problems in connection with the electric box with respect to the above-described conventional injection molding machine.
  • the upper surface of the machine base is of limited area, which can reasonably accommodate a mold clamping mechanism and an injection device but does not have sufficient room to accept the electric box.
  • the present inventor has found that the electric box may be mounted on the machine base without increasing the upper area of the machine base.
  • This invention has its characteristic in that both injection device and electric box are placed on and secured to a seat plate movably provided on the machine base.
  • the aforesaid seat plate is held by a plurality of guide members provided on both sides on the machine base, and the electric box is accommodated in a space beneath an injection and heating cylinder, and placed on and secured to the seat plate.
  • a space between an injection cylinder and an upper surface of the machine base varies with a gate position of a mold clamping device installed on the machine base but a space over the machine base formed on both sides of the injection cylinder is enough to install the electric box and the injection and heating cylinder will not be an obstacle to such installation.
  • Mounting of the injection device on the seat plate can be carried out directly or through the hydraulic piping block, but it will be preferable to carry out such mounting through the hydraulic piping block in view of rational wiring over the injection device side and electric box side.
  • FIG. 1 is a side view of an essential portion partly cutaway of the machine base.
  • FIG. 2 is a rear view of the injection device.
  • FIG. 3 is a front sectional view of the side of the injection device as viewed from front traversing the machine base.
  • FIG. 4 is a plan view showing the injection device turned sideways.
  • a machine base 1 is constructed in a conventional manner, and an injection device 2 and a mold clamping device 3 are laterally installed on the machine base 1.
  • a rectangular parallelopiped hydraulic piping block 6 also serving as a bed seat of the injection device 2 is mounted on the seat plate 5 while being displaced rearward, and above the hydraulic piping block 6, the injection cylinder 2 is installed on the machine base, having a rear cylinder portion 2a connected thereto.
  • a hydraulic passage (not shown) connected to the cylinder portion 2a and to a hydraulic motor 2b at the rear of the cylinder, and a nozzle touching hydraulic cylinder 7.
  • solenoid-operated valve devices 10, 10 which switch the internal hydraulic passage or control the quantity of oil and pressure.
  • Forward and backward movement of the injection device 2 are effected by actuation of the hydraulic cylinder 7 having a rear end of a piston 8 connected to a member 9 rotatably mounted by a shaft 9a top the rear end on the upper surface of the machine base 1.
  • An electric box 11 is installed on the forward portion of the seat plate 5, that is, on the seat plate on the underside of an injection and heating cylinder. Inside the electric box 11 are housed switches, various electric devices and meters required to operate the injection device 2 and the mold clamping device 3, and display portions, operating elements and the like therefor are provided on the surface of a panel. Electric wires 13 run from the electric box 11 to the electromagnetic valve devices 10 and a heater 12 in the peripery of the injection and heating cylinder. Since both the injection device 2 and the electric box 11 are installed on the seat plate and are movable with respect to the machine base 1, the wires 13 need not be much longer than where the electric box 11 is secured to the side of the machine base.
  • the wiring 14 to the electric box 11 may be accomplished within the machine base 1 in a manner similar to piping 15 to the hydraulic piping block 6, leaving the periphery of the injection device 2 free of obstructing cables and hoses.
  • the electric box 11 moves along with the injection device 2, even if the electric box 11 is in front of the injection device 2, it will not obstruct the injection device 2 during insertion. In addition, even though the electric box 11 is positioned on the underside of the injection and heating cylinder, the electric box 11 will not be thermally affected by a heater 12 since the latter is covered by a heat insulating cover, and the electric devices within the electric box 11 will not be degraded.
  • the guide members 4 on one side of the machine base may be removed to permit one to rotate the seat plate 5 about the shaft 9a on the machine base as shown in FIG. 4, whereby the end of the injection device 2 along with the electric box 11 may be displaced outside the machine base, and therefore, the electric box 11 will not be an obstruction when the screw is replaced.
  • the electric box which is normally mounted on the side of the machine base, is installed on the slide plate, and therefore, reducing the overall size required for the base.
  • a further advantage of the present invention is that the meters are easily visible and the operator can easily reach the controls.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
US07/124,353 1984-03-14 1987-11-23 Injection molding machine Expired - Lifetime US4773842A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP59-48826 1984-03-14
JP59048826A JPS60192610A (ja) 1984-03-14 1984-03-14 射出成形機

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US06711388 Continuation 1985-03-13

Publications (1)

Publication Number Publication Date
US4773842A true US4773842A (en) 1988-09-27

Family

ID=12814029

Family Applications (1)

Application Number Title Priority Date Filing Date
US07/124,353 Expired - Lifetime US4773842A (en) 1984-03-14 1987-11-23 Injection molding machine

Country Status (7)

Country Link
US (1) US4773842A (it)
JP (1) JPS60192610A (it)
KR (1) KR850006160A (it)
DE (1) DE3508842A1 (it)
FR (1) FR2561163B1 (it)
GB (1) GB2156266B (it)
IT (2) IT8553125V0 (it)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5310332A (en) * 1990-09-20 1994-05-10 Fanuc Ltd. Injection molding machine with a movable display device
US5391070A (en) * 1990-11-02 1995-02-21 Fanuc Ltd Injection molding machine equipped with a movable display unit
US5855935A (en) * 1991-01-03 1999-01-05 Brent; David Rudy Apparatus for injection moulding
US20110151048A1 (en) * 2009-12-21 2011-06-23 Schad Robert D Swivel mount for an injection drive
US20140065257A1 (en) * 2012-09-03 2014-03-06 Aisin Seiki Kabushiki Kaisha Injection molding apparatus
US20170291341A1 (en) * 2016-04-12 2017-10-12 Engel Austria Gmbh Protective cover for a plasticising cylinder
US10675799B2 (en) 2015-11-06 2020-06-09 Mold-Masters (2007) Limited Injection unit positioning apparatus

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3632449A1 (de) * 1986-09-24 1988-04-07 Karl Hehl Kunststoff-spritzgiessmaschine mit zugehoerigem computer und datensichtgeraet
CA1317720C (en) * 1988-04-02 1993-05-18 Karl Hehl Injection molding machine
JP2627818B2 (ja) * 1990-11-02 1997-07-09 ファナック株式会社 ディスプレイ器を備えた射出成形機
CN108556248A (zh) * 2018-01-05 2018-09-21 惠安耐亚节能科技有限公司 一种智能型轴承注塑生产设备
DE102018118376A1 (de) * 2018-07-30 2020-01-30 Kraussmaffei Technologies Gmbh Plastifiziereinheit

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3335464A (en) * 1965-03-03 1967-08-15 Lester Engineering Co Injection molding machine
US3425095A (en) * 1965-07-22 1969-02-04 Bata Shoe Co Injection molding apparatus
US3924994A (en) * 1971-02-27 1975-12-09 Katashi Aoki Injection device for synthetic resin injection molding

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3162900A (en) * 1962-06-20 1964-12-29 Koehring Co Extruder lifting and rotating device
JPS5128664B1 (it) * 1971-02-27 1976-08-20

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3335464A (en) * 1965-03-03 1967-08-15 Lester Engineering Co Injection molding machine
US3425095A (en) * 1965-07-22 1969-02-04 Bata Shoe Co Injection molding apparatus
US3924994A (en) * 1971-02-27 1975-12-09 Katashi Aoki Injection device for synthetic resin injection molding

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Modern Plastics Encyclopedia, 1982 1983, p. 214. *
Modern Plastics Encyclopedia, 1982-1983, p. 214.

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5310332A (en) * 1990-09-20 1994-05-10 Fanuc Ltd. Injection molding machine with a movable display device
US5391070A (en) * 1990-11-02 1995-02-21 Fanuc Ltd Injection molding machine equipped with a movable display unit
US5855935A (en) * 1991-01-03 1999-01-05 Brent; David Rudy Apparatus for injection moulding
US20110151048A1 (en) * 2009-12-21 2011-06-23 Schad Robert D Swivel mount for an injection drive
US8221113B2 (en) * 2009-12-21 2012-07-17 Athena Automation Ltd. Swivel mount for an injection drive
US20140065257A1 (en) * 2012-09-03 2014-03-06 Aisin Seiki Kabushiki Kaisha Injection molding apparatus
US10675799B2 (en) 2015-11-06 2020-06-09 Mold-Masters (2007) Limited Injection unit positioning apparatus
US11534947B2 (en) 2015-11-06 2022-12-27 Mold-Masters (2007) Limited Injection unit positioning apparatus
US20170291341A1 (en) * 2016-04-12 2017-10-12 Engel Austria Gmbh Protective cover for a plasticising cylinder
US10661490B2 (en) * 2016-04-12 2020-05-26 Engel Austria Gmbh Protective cover for a plasticizing cylinder

Also Published As

Publication number Publication date
FR2561163B1 (fr) 1988-11-25
GB2156266B (en) 1987-05-07
FR2561163A1 (fr) 1985-09-20
JPS60192610A (ja) 1985-10-01
IT8553125V0 (it) 1985-03-14
IT8567255A1 (it) 1986-09-14
GB8506534D0 (en) 1985-04-17
IT1184907B (it) 1987-10-28
DE3508842A1 (de) 1985-09-26
KR850006160A (ko) 1985-10-02
IT8567255A0 (it) 1985-03-14
GB2156266A (en) 1985-10-09

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